Ubuntu Security Notice 2368-1 - It was discovered that OpenVPN incorrectly handled HMAC comparisons when running in UDP mode. If a remote attacker were able to perform a man-in-the-middle attack, this flaw could possibly be used to perform a plaintext recovery attack.
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Ubuntu Security Notice USN-2368-1
October 02, 2014
openvpn vulnerability
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A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 12.04 LTS
Summary:
OpenVPN could be made to expose sensitive information over the network.
Software Description:
- openvpn: virtual private network software
Details:
It was discovered that OpenVPN incorrectly handled HMAC comparisons when
running in UDP mode. If a remote attacker were able to perform a
man-in-the-middle attack, this flaw could possibly be used to perform a
plaintext recovery attack.
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 12.04 LTS:
openvpn 2.2.1-8ubuntu1.3
In general, a standard system update will make all the necessary changes.
References:
http://www.ubuntu.com/usn/usn-2368-1
CVE-2013-2061
Package Information:
https://launchpad.net/ubuntu/+source/openvpn/2.2.1-8ubuntu1.3